Deduplicate - Remove or transform vowels

[hobovsky]

From #39

1. Disemvowel Trolls

   • Remove all vowels
   • 7kyu
   • 89% with 223k+ completions
   • 2 pending issues
   • 23 languages + 5 pending translations
   • Published Feb 2014, author inactive

2. All Star Code Challenge #3

   • Remove vowels, input only lowercase
   • 7kyu
   • 92% with 3k completions
   • 1 pending issue
   • 5 languages + 4 pending translations (Go pending translation not covered by 1.)
   • Published Dec 2016, author inactive

3. Vowel remover

   • Remove only lowercase vowels from upper- and lower-case input
   • 8kyu
   • 92% with ~21k completions
   • 2 pending issues
   • 7 languages + 6 pending translations (COBOL approved translation, Go pending translation not covered by 1.)
   • Published May 2015, author inactive

4. Exclamation marks series #11: Replace all vowel to exclamation mark in the sentence

   • Change all vowels to '!'
   • 8kyu
   • 93% with 16k completions
   • 1 pending issue
   • 12 languages, no pending translations
   • Published Oct 2016, author inactive

5. Vowel Changer

   • Change all vowels to a requested character
   • 7kyu
   • 92% with ~1.7k completions
   • No pending issues
   • JS and python only
   • Published Jul 2017, author inactive

6. Vowel One

   • Build a new string by mapping vowels to '0' and consonants to '1'.
   • 7kyu
   • 93% with 4.3k completions
   • No pending issues
   • 4 languages + 1 pending translation
   • Published Oct 2016, author deleted

---

Conclusion

• Keep 1. Disemvowel Trolls
• [ ] Retire 2. All Star Code Challenge #3 after Go translation gets moved to 1.
• [ ] Retire 3. Vowel remover after Go and COBOL translation get moved to 1.
• Keep 4. Exclamation marks series #11: Replace all vowel to exclamation mark in the sentence
• [x] Retire 5. Vowel Changer

Filling gaps

• [x] Move Go pending translation from 2. or 3. to 1.
• [x] Move COBOL approved translation from 3. to 1,

[hobovsky]

I think kata here can be separated in separate groups:

• Remove vowels: out of kata 1., 2., and 3., I think the 1. would be best to keep due to the most languages. I'd vote to retire 2. and 3.
• Change vowels to some character: I like kata 5. a bit more than 4. because it's more generic, but I think that keeping 4. will be better because it has many more languages.
• Kata 6., as dull as it is, is not necessarily close enough to be retired as a duplicate (in this set, at least). I'm fine with keeping it and handling in another round of "trivial map kata", or we can get rid of it now if you all prefer.

[KayleighWasTaken]

Keep 1, 5, and 6. Retire 2, 3, and 4.

For reasoning, see hobs comment. (I don't think that retiring 6 is in scope of this issue).

[EloiseRosen]

vote for keep 1, 4, and 6, retire the others

[ejini6969]

Keep 1 and 4 only, retire the rest! There's too many string substitution or replacement katas in the site and losing 6. adds no harm to the community (Except the author maybe :-)~~

EDIT: Owh wait, author long gone alr ^_^ (no harm whatsoever now ~~

[benjaminzwhite]

Agree with keep 1 and 4 based on hobovsky's reasoning. Agree retire 2,3,5.

Agnostic about 6 - but tend to agree with ejini about being r u t h l e s s (there's a comment in the discourse with someone saying "how many vowel katas are there on CW?" so...)

[hobovsky]

Almost everyone agrees with keeping 1. and 4. and retiring 2., 3., and 5.
I have totally no idea what to do with 6. I will leave it as inconclusive for now, and maybe there will be some more opinions before remaining translations get moved and the issue gets closed.

[ejini6969]

With Go translation published earlier by someone and now COBOL has also been transferred, this one can be concluded